Mathematics, 20.07.2019 06:10 asaadasaadasaad6524
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and prepreview ads before the movie starts. many complain that the time devoted to previews is too long. a preliminary sample conducted by the wall street journal showed that the standard deviation of the amount of time devoted to previews was four minutes. use that as a planning value for the standard deviation in answering the following questions. a. if we want to estimate the population mean time for previews at movie theaters with a margin of error of 78 seconds, what sample size should be used? assume 95% confidence.
Answers: 2
Mathematics, 21.06.2019 20:10, thekid3176
Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12
Answers: 1
Mathematics, 21.06.2019 20:30, gamelaza431
At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.
Answers: 1
Mathematics, 21.06.2019 22:30, azainababbas
Which statement shows that 6.24 is a rational number? a. 6.24 = 6.242424 b. 6.24 = 6.24 c. 6.24 = 68⁄33 d. 6.24 = 66⁄25
Answers: 1
Mathematics, 21.06.2019 23:30, DesperatforanA
Tim earns $120 plus $30 for each lawn he mows. write an iniqualityvto represent how many lawns he needs to mow to make more than $310
Answers: 2
Customers arrive at a movie theater at the advertised movie time only to find that they have to sit...
Mathematics, 27.12.2020 02:20
Chemistry, 27.12.2020 02:20